-- @owner: wan005
-- @date: 2024-08-12
-- @testpoint: 验证ifnull()函数作为关键字使用，部分测试点合理报错

--prestep1:切换B库;expect:执行成功
@conn PrimaryDbBmode;
show sql_compatibility;

--step1:作为列名;expect:成功
drop table if exists ifnull_test cascade;
create table ifnull_test(ifnull text);
insert into ifnull_test values('0');

--step2:作为索引名;expect:成功
create index on ifnull_test(ifnull);

--step3:作为表名;expect:成功
drop table if exists ifnull cascade;
create table ifnull(ifnull text);
drop table if exists ifnull cascade;

--step4:作为数据库名;expect:成功
drop database if exists ifnull;
create database ifnull;
drop database ifnull;

--step5:作为外部数据源名;expect:成功
drop data source if exists ifnull;
create data source ifnull;
drop data source ifnull;

--step6:作为自定义函数名;expect:报错
create or replace function ifnull(c1 int)
returns text
as  $$
begin
    return c1;
end;
$$language plpgsql;
/

--step7:作为存储过程名;expect:报错
drop table if exists t_ifnull_0025;
create table t_ifnull_0025(c1 text);
CREATE OR REPLACE PROCEDURE ifnull(P1 IN text) AS
BEGIN
insert into t_ifnull_0025 values ('00001');
raise info '测试ifnull作为存储过程名';
END;
/

--step8:作为角色名;expect:成功
drop role if exists ifnull;
create role ifnull with password 'gauss@123' valid until '2001-12-12';
drop role ifnull;

--step9:作为用户组名;expect:成功
drop group if exists ifnull;
create group ifnull with password 'gauss@123';
drop group ifnull;

--step10:作为模式名;expect:成功
drop schema if exists ifnull;
create schema ifnull;
drop schema ifnull;

--step11:作为序列名;expect:成功
create sequence public.ifnull start 100 cache 50;
drop sequence public.ifnull;

--step12:作为用户名;expect:成功
drop user if exists ifnull;
CREATE USER ifnull PASSWORD 'Bigdata@123';
drop user ifnull;

--step13:作为游标名;expect:成功
drop table if exists ifnull_test cascade;
create table ifnull_test(cid int,fid int);
start transaction;
cursor ifnull for select * from ifnull_test order by 1;
close ifnull;
end;

--step14:清理环境;expect:成功
drop table if exists ifnull_test cascade;
drop table if exists t_ifnull_0025;